ESP-01 ESP8266 WiFi Module
The ESP-01 ESP8266 WiFi Module is a compact and powerful wireless transceiver module that enables microcontrollers like Arduino to connect to WiFi networks and communicate over the internet. It is based on the ESP8266 SoC and provides a cost-effective solution for IoT, home automation, wireless monitoring, and remote control applications.
The module supports UART serial communication and can operate as a standalone microcontroller or as a WiFi adapter for Arduino, AVR, and other development boards.
Features
- Based on ESP8266 high-performance WiFi SoC
- Supports IEEE 802.11 b/g/n WiFi standards
- 2.4GHz wireless communication
- UART serial interface for easy connection
- Supports Station (STA), Access Point (AP), and STA+AP modes
- Built-in TCP/IP protocol stack
- Supports AT commands and custom firmware
- Small size and low power consumption
- Compatible with Arduino, ESP8266 development boards, and IoT platforms
Technical Specifications
| Parameter | Details |
|---|---|
| Model | ESP-01 |
| Chipset | ESP8266 |
| WiFi Standard | IEEE 802.11 b/g/n |
| Frequency | 2.4GHz |
| Operating Voltage | 3.0V – 3.6V DC |
| Logic Level | 3.3V TTL |
| Flash Memory | Usually 1MB |
| Interface | UART (TX/RX) |
| GPIO Pins | GPIO0, GPIO2 |
| Wireless Security | WEP/WPA/WPA2 |
| Antenna | On-board PCB Antenna |
| Operating Modes | STA, AP, STA+AP |
Pin Description
- VCC – 3.3V power supply input
- GND – Ground connection
- TX – UART data transmission
- RX – UART data reception
- GPIO0 – General-purpose I/O and programming mode selection
- GPIO2 – General-purpose I/O
- CH_PD / EN – Chip enable pin
- RST – Reset pin
Applications
- IoT projects
- Smart home automation
- WiFi-based sensors
- Wireless data logging
- Remote monitoring systems
- Arduino internet connectivity
- DIY electronics projects
Package Includes
- 1 × ESP-01 ESP8266 WiFi Module






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